Here is an extensive tutorial on how you can create a great looking web 2.0 logo (like the one above that I created for the tutorial). Open Adobe Photoshop and create a new file (file>new): 4500×4000 pixels at 300dpi is a nice resolution to choose if you want your logo to be printable. It will [...]

First, make a new file and put it in “RGB Color” mode. Now, set your foreground color to black, then select the fill bucket and fill the background to black.
Now make a new layer. Select the Elliptical Marquee tool and create a circle (hold down Shift and drag). Fill in the circle with the color [...]